css/CSS2/visudet/content-height-004.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS2 inline level box content height test</title>
<link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net">
<link rel="help" href="https://drafts.csswg.org/css2/visudet.html#line-height">
<link rel="match" href="reference/content-height-004-ref.html">
<meta name="assert" content="The height of the content area of an inline-level does not depend on fallback fonts
                             regardless of whether they are used on not.">
<style>
@font-face {
  font-family: 'high-a-only';
  font-style: normal;
  font-weight: 400;
  src:  url(/fonts/Revalia.woff) format('woff');
  unicode-range: U+0061, U+0020;
}
@font-face {
  font-family: 'deep-b-only';
  font-style: normal;
  font-weight: 400;
  src: url(/fonts/AD.woff) format('woff');
  unicode-range: U+0062, U+0020;
}

div {
  font-size: 50px;
  display: inline-block;
  color: transparent;
  font-family: high-a-only, deep-b-only;
}

span { background: blue; }

div { }
div:nth-of-type(2) { }
div:nth-of-type(3) { }
div:nth-of-type(4) { font-family: high-a-only }
aside {
  max-width: 300px;
  overflow: hidden;
  white-space: pre;
}
</style>

<p>Test passes if the blue shape below is a rectangle, but not some other polygon.

<aside>
<div><span>aa</span></div><div><span>bb</span></div><div><span>ab</span></div><div><span>aaa</span></div>
</aside>